Truck dump



I. N. MARK. I

TRUCK DUMP.

APPLICATION FILED JAN. 22. 1921.

Patented Mar. 28, 1922.

s SHEETS-SHEET L I. N. MARK.

TRUCK DUMP. v APPLICATION FILED JAN. 22, 1921.

'1,410,943, Patented Mar. 28, 1922.

SHEETS-SHEET?- avwewiioz Z agatMMQ/Zif.

I. N, MARK.

TRUCK DUMP.

APPLICATION mm IAN. 22. 192

Patented Mar. 28, 1922.

3 SHEETS-$HEET 3.

Isaac Ma I'- ISAAC N. MARK, or nuitnrneroiv. KANSAS..

annex seal f 1 the following is a specification, reference .being adtherein to the accompanying drawings.,, n, V p .j This invention relatesto a truck. dump,

1 0131118 object the provision of. a simpleandefiici'ent means forraising and lowering the truckubo x or body. Another object oftheinvention is. the production ofa simple andeffic'ienthoistingidevicein combinationtvith the side-sills'of a vehicleor truck and the hinged or pivotally mfiunted truckbox or body carriedby the ith these:andotherobjects in view,'my invention comprise certainnovel combinations,,,constructions and arrangements of partsas; will behereinafter described,illustrated in theaccompanying drawings; and moreparticularly pointed out in the appended claim. .p

In the drawings: i i a H igure .is perspective view of anapparatusconstructed,in accordance with the presen invention shown in a closed ornormaipdsiti nmhile. e l V e Figii re 2 is a longitudinal sectionalviewof ,the apparatus, showingthe truck box or body in a raised or dumpingposition. a

Figure 3 is a transverse section, taken on line ig. 1,.and lookingin thedirection ofthe arrows p v,

Figure 4 is an enlarged fragmentary VlBW, in side elevation, of thelockingpawl and'its co operating parts. ,1 t Figure 5 1s a sectionalview, taken on line 5 5, Fig; 1. V

Figure fi'is an enlarged view, in elevation, of the locking device for.the ratchet disc.

Figure 7 is a fragmentary, perspective view of my apparatus, showinganother embodiment of the locking pawl and ratchet device.

Referring to the drawings by numerals, 1 designates the side-sills of amotortruck, and 2 is the truck box or body, mounted by means of a hingedconnection, at 3, upon the sills 1; these sills 1 constitute a frame andin claiming this invention, I do not limit myself merely to the termsills. The truck Application filed January 22, 19s1, "seriaino. 439,176.

Specification of Letters Pgitntd .28,

boXorbody includes a base structures; this base structured. compriseslongitudinally extending side beams 5, upon which are mountedthetransverse beams 6. t I

.The hoisting device includes horizontal brackets 75 fastened'to the topof the sidesills 1, and journaled under these; brackets Inga rod 8..R-otatably Inountedon-rod 8,

ed uponthe ends of tubing 9 and can quickly between the inneredgesofsills 1,'is a tubing ,9; fastened tothe ends of the tubing 9 are sleeves10, F g.5; these sleeves 10 are thread,-

the hoisting .device,.or toireplace partswhen worn. sidebar 11 arethreaded, at their lower ends, into the sleeve-10,. and their upper endsextend into a yoke member 12; it isto benoted that the tubing 9, sleeves10,:bars 11, and .yoketmember -12 constitute a yloke device of aspecific and peculiar structure, pivotally mounted upon the rod 8; I

hookl .is slidably mounted upon the central part of; the yoke,memben'the hook havinga springli, Fig. 3, thereon, between theyokemember 12 and the nut and Washer 15. 1 f. q L ifting chain-16 is.connected atits upper or outer end to hook-13, and its lower end isfastenedl. around ithe windlass-,rod 17.

This rod 17 is journaled upon the inner ends ofthe sideqbeams 5,; andoneendis provided I:

with an operating handle 18. A ratchet disc 19 is fixedly secured.torod17, contiguous to the outer faceof one of the beams 5, and this,disc is provided with. a circular row of sockets orapertures-2O forreceiving the inner end of the locking rod 2110f the locking device 22:This locklng devicet22' includes red :21v slidably. mounte d in brackets23, 1

which brackets are fastened to the front face of ,the inner, transversebeamtfi. A cotter pin 24 is placed upon rod 21 between the brackets 23,and a coil spring 25 is placed on rod 21 between one of the brackets andthe cotter pin, so that at all times the rod 21 has a tendency to enteroneof the sockets orapertures 20, by reason of the inner end ofthe rodpressing against the surface of the. outer face of the ratchet disc 19when not actually seated in a socket or aperture 20; the operator, bygrasping the handleend 21 of the rod 21, .can quickly release th ratchetdisc 19 by withdrawing the inner endof rod 21 from engagement With thedisc, but by means of locking device 22, the

rotation of the Windlass rod 17 can be prevented, thereby retainingthetruck box 2 in a fixed position. 7

Anchoring chains tached to the inner faces or sills 1; the

inner ends of the anchoring chains26 are wrapped around and fastened .tothe, winds lass rod 17 These chains will limitthe rearward tilting ofthe .boxand-Will relieve '1' the chain 16 from such strain.

VVhen -the apparatus is in the position shown in Figl 1, the operatorrelcases the ratchet 1 disc l9 bydrawing outwardly on the handle 21 ofthe lockingdevic'ef22,

fthen, by' 'rotating the'windlass'rod17 in one direction, the 1 box 2Will be raised to its tilting position, Fig. 2; thereby permitting theload'to be dumped fromtherear end of the boxl As the load settlestoivz'ird the rearend of thBbOX; the tendency ofthe boX'ivill be to sving' higher at "its forward end; but this action will *be" prevented bythe I anchoring chains 26'. If some ofthe load'i's" retained inthe'bo'x, so that the weight of thejboX and load at therear oftheflhinges Bis greater than the portion of the'boxin front of thehinges; thechains 26 will also start'thefor- Ward end of the'box todescendfwhen the chains aie'reeled'upon the Windlass rod 17 whenitis't'urned in a reversed direction.

Ordinarily by reversing'the" rotation of the indlass, the chain 16Wi1lbe unreeled from the" Windlass rod, thereby i allowing the'hoir todescend down A to its normal horizontal position, resting upon the sills1, asshovvn inFig. 1

It is apparent that w1ienthe lifting than; 1'6 'isfbeing reeled upon theWindlass rod 17, the anchoring chains 26' are being unreeled 1 therefromandrvi'ce versa;

flwkingrm 2 (Fig; is mead Z for preventingaccidental rotation oftheratchet" disc in onefdirection'. This paw1 2 v8 me ofthe' locking pawland ratchet device in whicli'anangle bracket2 3? is secured in a]horizontal position to one of the side bea ns "5;"the locking rod '21'is slidably T In'o'unted upon this bracket, With the coil spring on therodbetween parts of" the 26 have their outer ends" fastened to hooks 27,Whichhooks are i at-' theratchet disc;

bracket. A I looking pawl 28 is pivotally mounted on the beam '5 and"engages the ratchetdisc 19. i

When the ratchet disc 19 is being rotated by the svfingingof the crank18, the operator can grip the handle-end 21 and hold the rod 21 fromengagement with the ratchet v,disc lfl and at the time the paWlQS-avillprevent the disc from rotation in one direction. When therodQliSreleasedit Will enter one of the sockets 20 and positively lock the disc againstrotation." The ipawl may thenfibe disengaged from thediscf Normallyit"i'vill only benecessar to pull the rod fro'ni en} gagenient with; thedisc to" allow the 'boXQZ to swing "down onto the framej *Thepawlmaytlien bef's wu' ng into en agement;

My hoisting device is simple intensive:

tion and comparatively easy for 0ne 'inaifto 'ai defficientfin movingthe box sump"; ing positionf or returning it' tc it securely intliehoriz'ontal position pon th'e-side-sills orplatform of the truck-orp erate,- and action of the device is positive 1 v While I' ha'vedescribedthepreferiedfem bodiinent of my I invention, have; tr'a'ted;the same n the" accompanying draw ings, certam' minor changes oralterations may appear to one skilled inthe .artfi to which thisinvention relates; during the ex provided with sockets orlapertures, fildcle in; device fastenedto sa dbo'x inembernsaid locking device includng a" sp'ringfpr'essed rod adapted to enter 'said aperturesIotQtlieratchet disc for hol'diiig'thc rratchet' dis againstrotation, and means:connected the Windlass rod and. to vthejframe"for rais-,ingtheboameniben V v t of h miwfietifi 'In testimony ivhere signature,7

-- ISAAC fi MAR-liij

